Overview: SQL remains a core skill for data management across industries in 2026Free courses build fundamentals while paid ...
Relational calculus. Query processing and optimization. Transaction processing: failure, recovery, and concurrency. Database security. Logic-based systems. Parallel ...
The world of the data professionals and DBAs is swirling with threats and risks, and those dangers are on the rise. You’re probably accustomed to using longstanding database features to secure your ...
SQL databases have constraints on data types and consistency. NoSQL does away with them for the sake of speed, flexibility, and scale. One of the most fundamental choices to make when developing an ...
Microsoft this week announced SQL Advanced Threat Protection (ATP), which is described as "a new security package" for Azure SQL Database users. Microsoft charges for using SQL ATP, although there's a ...
In the beginning, there were files. Later there were navigational databases based on structured files. Then there were IMS and CODASYL, and around 40 years ago we had some of the first relational ...
The structured query language is a powerful tool for connecting to many database systems that store data in tables organized into rows and columns. It's often used on the backend of business websites ...
The heart of any relational database management system is the system catalog that documents the database objects and system settings being used. The system catalog offers a wealth of information about ...
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